Science Weekly: Iain Stewart on climate change

In this week's podcast, 'rock star geologist' Iain Stewart joins presenter Alok Jha and the rest of the pod. Also, dire warnings from the government's former chief scientist David King, plus a trip around the Natural History Museum's new 'cocoon'

We ask geologist and TV presenter, Iain Stewart about the history of climate change, how did we find out the Earth was warming, and what Margaret Thatcher has to do with it. His new series Earth: The Climate Wars began this week on BBC Two.

Also, why your partner may end up looking like your parents, crying babies, and greenhouses in the Sahara that can grow food. Of course, Cern gets a mention ahead of the big (bang) switch on this week.